package com.sky.controller.User;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "查询菜品")

public class UserDishController {
@Autowired
private DishService dishService;
@Autowired
private RedisTemplate redisTemplate;
    /**
     * 查询菜品
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("查询菜品")
    public Result<List<DishVO>> list(Long categoryId){
        log.info("查询菜品{}",categoryId);
        //先查询redis中是否有数据
        String key="dish_"+categoryId;
        List<DishVO>list =(List<DishVO>) redisTemplate.opsForValue().get(key);
        if(list!=null&&list.size()>0){
            //如果redis中有数据直接返回
            return Result.success(list);
        }
        //如果redis 中没有数据则 先查询数据库 再保存数据
        list = dishService.selectByCategoryId(categoryId);
        redisTemplate.opsForValue().set(key,list);
     return Result.success(list);
    }
}
